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參數(shù)資料
| 型號(hào)： | BL34118 |
| 廠商： | 上海貝嶺股份有限公司 |
| 英文描述： | Voice Switched Speakerphone Circuit |
| 中文描述： | 語(yǔ)音開關(guān)揚(yáng)聲器電路 |
| 文件頁(yè)數(shù)： | 5/11頁(yè) |
| 文件大小： | 567K |
| 代理商： | BL34118 |
BL34118
http://www.belling.com.cn
- 5 -
8/15/2006
Total
11 Pages
Wrote by 2006
ATTENUATOR CONTROL
(T
A
= +25
°
C)
CT Voltage ( Pin 14 – VB)
Rx Mode (VLC = VB)
Idle Mode
Tx Mode
V
CT
-
-
-
+240
0
-240
-
-
-
mV
CT Source Current (switching to Rx mode)
I
CTR
-85
-60
-40
μ
A
μ
A
μ
A
k
CT Sink Current (switching to Tx mode)
I
CTT
+40
+60
+85
CT Slow Idle Current
I
CTS
-
0
-
CT Fast Idle Internal Resistance
R
FI
1.5
2.0
3.6
VLC Input Current
I
VLC
-
-60
-
nA
Dial Tone Detector Threshold
V
DT
10
15
20
mV
MICROPHONE AMPLIFIER
(T
A
= +25
°
C, V
MUT
≤
0.8V, A
VCL
= 31 dB unless otherwise noted)
Output Offset (VMCO – VB, Feedback R = 180 k
)
MCO
VOS
-50
0
+50
mVdc
Open Loop Gain (f < 100 Hz)
A
VOLM
70
80
-
dB
Gain Bandwidth
GBW
M
-
1.0
-
MHz
Output High Voltage (Iout = -1.0mA, Vcc = 5.0V)
V
MCOH
3.7
-
-
Vdc
Output Low Voltage (Iout = +1.0mA)
V
MCOL
-
-
200
mVdc
Input Bias Current (@ MCI)
I
BM
-
-40
-
nA
Muting (
Gain) (f = 1.0KHz, V
MUT
= 2.0 V)
(300 Hz < f < 10 kHz)
GMT
-55
-
-
-68
-
-
dB
MUT Input Resistance ( Vcc = V
MUT
= 6.5V)
R
MUT
50
90
-
k
MUT Input – High
V
MUTH
2.0
-
Vcc
Vdc
MUT Input – Low
V
MUTL
0
-
0.8
Vdc
Distortion ( 300 Hz < f < 10 kHz)
THD
M
-
0.15
-
%
HYBRID AMPLIFIER
(T
A
= +25
°
C)
HTO- Offset (VHTO- - VB, Feedback R = 51 k
)
HTO- to HTO+ Offset (Feedback R = 51 k
)
H
VOS
-20
0
+20
mVdc
HB
VOS
-30
0
+30
mVdc
Open Loop Gain ( HTI to HTO-, f < 100 Hz)
A
VOLH
60
80
-
dB
Gain Bandwidth
GBW
H
-
1.0
-
MHz
Closed Loop Gain ( HTO- to HTO+)
A
VCLH
-0.35
0
+0.35
dB
Input Bias Current ( @ HTI)
I
BH
-
-30
-
nA
HTO- High Voltage ( Iout = -5.0 mA)
V
HT-H
3.7
-
-
Vdc
HTO- Low Voltage ( Iout = +5.0 mA)
V
HT-L
-
-
250
mVdc
HTO+ High Voltage ( Iout = -5.0 mA)
V
HT+H
3.7
-
-
Vdc
HTO+ Low Voltage ( Iout = +5.0 mA)
V
TH+L
-
-
450
mVdc
Distortion ( 300 Hz < f < 10 kHz, See Figure 1)
THD
H
-
0.3
-
%
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